Oil-pan heater



A. E. BERDON.

OIL PAN HEATER. APPLICATION FILED JULY 29,1920.

PatentedSept. 20, 1921 LQSQ MQO 511 mm To c l diii ALBERT n. sermon, or nn'rnorr, iurcnroeu, ASSIGNGB T0 poison nno'rnnns, or

DETROIT, MICHIGAN, A CDRPORATION OF MICHIGAN.-

Application filed .Tu1y'29,

To all whom it may concern:

Be it known that I, ALBERT E. Brannon, a citizen of the United States, residing at Detroit, Michigan, have invented certain new and useful Improvements in Oil-Pan Heaters, of which the following is a clear, full, and exact description.

My invention relates to oilpan heaters for use in internal combustion engines, and particularly with automobile engines, the ob-,

to the oil pan thereof; and

Fig. 2 is a sectional view on the line 2--2 of Fig. 1. v

Referring to the drawings, the oil pan 1 may, and preferably does form part of the crank casing, and near the bottom thereof is secured a casting 2 riveted to the bottom of the oil pan at This casting provides a seat for'an elbow l, which is attached to the end of the flexible tube leading from the exhaust manifold. The elbow and cast ing 2 are properly faced off, and a copper? and asbestos gasket. 5 is interposed between them so as to make a joint that will not leale The elbow 4 carries the oil heater proper,

' said heater consisting of an outer tube 6 and an inner tube 7, the outer tube being closed at its inner end and open at its outer end, the inner tube being open at both ends so that the gases may flow into the outer tube across the bottom of the oil pan heater and back through the-inner tube 7 from which they pass into the atmosphere at its outer opening 8.

A flexible tube 9 is fastened to the elbow $1 and leads to the exhaust manifold 10. The valve 11 is provided in the tube 9, which Specification of Letters Patent.

HEATER.

Patented se t. so, rear.

19%. Serial no. 399,800.

valve may be controlled fi'om the instru nient board by means of a Bowden Wire 12 inclosed 1n a casing 13. The wlre 12 is con nected at the instrument board 15 to a button.

thereof, and that parts may be used Without others. I

Having thus described my invention, What I desire to claim and secure by Letters Patout is i 1. An oil pan heater adapted for use in internal combustion engines, said heater having inlet means for the heating gases, and. outlet means for the same, said means being situated one within the other.

2. An oil pan heater adapted for use in internal combustion engines, said heater having an outer shell and an inner shell, the outer shell being closed at its'inner end and connected with the heat supply at its outer end, the inner shell having an open end ter minating short of the inner end of the outer shell, the outer end of the inner shell being open to the atmosphere.

3. An oil pan heater adapted for use in internal combustion engines, said heater having an outer shell and an inner shell, the outer shell being closed at its inner end and connected with the heat supply at its outer end, the inner shell having an open end terminatingshort of the inner end of the out-er shelhthe outer end of the inner shell being open to the atmosphere, 9.11% a valve controllin a supply of heat to sai outer shell.

i igned at Detroit, Michigan, this 19th day of July, 1920.

ALBERT arse-non. 

